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CVE-2024-49980 (GCVE-0-2024-49980)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-05-11 20:43
VLAI
Title
vrf: revert "vrf: Remove unnecessary RCU-bh critical section"
Summary
In the Linux kernel, the following vulnerability has been resolved: vrf: revert "vrf: Remove unnecessary RCU-bh critical section" This reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853. dev_queue_xmit_nit is expected to be called with BH disabled. __dev_queue_xmit has the following: /* Disable soft irqs for various locks below. Also * stops preemption for RCU. */ rcu_read_lock_bh(); VRF must follow this invariant. The referenced commit removed this protection. Which triggered a lockdep warning: ================================ WARNING: inconsistent lock state 6.11.0 #1 Tainted: G W -------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. btserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes: ffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30 {IN-SOFTIRQ-W} state was registered at: lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 packet_rcv+0xa33/0x1320 __netif_receive_skb_core.constprop.0+0xcb0/0x3a90 __netif_receive_skb_list_core+0x2c9/0x890 netif_receive_skb_list_internal+0x610/0xcc0 [...] other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(rlock-AF_PACKET); <Interrupt> lock(rlock-AF_PACKET); *** DEADLOCK *** Call Trace: <TASK> dump_stack_lvl+0x73/0xa0 mark_lock+0x102e/0x16b0 __lock_acquire+0x9ae/0x6170 lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 tpacket_rcv+0x863/0x3b30 dev_queue_xmit_nit+0x709/0xa40 vrf_finish_direct+0x26e/0x340 [vrf] vrf_l3_out+0x5f4/0xe80 [vrf] __ip_local_out+0x51e/0x7a0 [...]
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:32 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < 718a752bd746b3f4dd62516bb437baf73d548415 (git)
Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < 8c9381b3138246d46536db93ed696832abd70204 (git)
Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < e61f8c4d179b2ffc0d3b7f821c3734be738643d0 (git)
Affected: 504fc6f4f7f681d2a03aa5f68aad549d90eab853 , < b04c4d9eb4f25b950b33218e33b04c94e7445e51 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvrf: revert \\\"vrf: Remove unnecessary RCU-bh critical section\\\"\\n\\nThis reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.\\n\\ndev_queue_xmit_nit is expected to be called with BH disabled.\\n__dev_queue_xmit has the following:\\n\\n        /* Disable soft irqs for various locks below. Also\\n         * stops preemption for RCU.\\n         */\\n        rcu_read_lock_bh();\\n\\nVRF must follow this invariant. The referenced commit removed this\\nprotection. Which triggered a lockdep warning:\\n\\n\\t================================\\n\\tWARNING: inconsistent lock state\\n\\t6.11.0 #1 Tainted: G        W\\n\\t--------------------------------\\n\\tinconsistent {IN-SOFTIRQ-W} -\u003e {SOFTIRQ-ON-W} usage.\\n\\tbtserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:\\n\\tffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30\\n\\t{IN-SOFTIRQ-W} state was registered at:\\n\\t  lock_acquire+0x19a/0x4f0\\n\\t  _raw_spin_lock+0x27/0x40\\n\\t  packet_rcv+0xa33/0x1320\\n\\t  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90\\n\\t  __netif_receive_skb_list_core+0x2c9/0x890\\n\\t  netif_receive_skb_list_internal+0x610/0xcc0\\n          [...]\\n\\n\\tother info that might help us debug this:\\n\\t Possible unsafe locking scenario:\\n\\n\\t       CPU0\\n\\t       ----\\n\\t  lock(rlock-AF_PACKET);\\n\\t  \u003cInterrupt\u003e\\n\\t    lock(rlock-AF_PACKET);\\n\\n\\t *** DEADLOCK ***\\n\\n\\tCall Trace:\\n\\t \u003cTASK\u003e\\n\\t dump_stack_lvl+0x73/0xa0\\n\\t mark_lock+0x102e/0x16b0\\n\\t __lock_acquire+0x9ae/0x6170\\n\\t lock_acquire+0x19a/0x4f0\\n\\t _raw_spin_lock+0x27/0x40\\n\\t tpacket_rcv+0x863/0x3b30\\n\\t dev_queue_xmit_nit+0x709/0xa40\\n\\t vrf_finish_direct+0x26e/0x340 [vrf]\\n\\t vrf_l3_out+0x5f4/0xe80 [vrf]\\n\\t __ip_local_out+0x51e/0x7a0\\n          [...]\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vrf: revert \\\"vrf: Remove unexpected RCU-bh critical section\\\" Esto revierte el commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853. Se espera que dev_queue_xmit_nit se llame con BH deshabilitado. __dev_queue_xmit tiene lo siguiente: /* Deshabilitar irqs suaves para varios bloqueos a continuaci\\u00f3n. Tambi\\u00e9n * detiene la preempci\\u00f3n para RCU. */ rcu_read_lock_bh(); VRF debe seguir esta invariante. el commit a la que se hace referencia elimin\\u00f3 esta protecci\\u00f3n. Lo que activ\\u00f3 una advertencia de lockdep: ================================= ADVERTENCIA: estado de bloqueo inconsistente 6.11.0 #1 Tainted: GW -------------------------------- uso inconsistente de {IN-SOFTIRQ-W} -\u0026gt; {SOFTIRQ-ON-W}. btserver/134819 [HC0[0]:SC0[0]:HE1:SE1] toma: ffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, en: tpacket_rcv+0x863/0x3b30 {IN-SOFTIRQ-W} el estado se registr\\u00f3 en: lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 packet_rcv+0xa33/0x1320 __netif_receive_skb_core.constprop.0+0xcb0/0x3a90 __netif_receive_skb_list_core+0x2c9/0x890 netif_receive_skb_list_internal+0x610/0xcc0 [...] otra informaci\\u00f3n que podr\\u00eda ayudar Depuremos esto: Posible escenario de bloqueo inseguro: CPU0 ---- lock(rlock-AF_PACKET);  lock(rlock-AF_PACKET); *** BLOQUEO INTERMEDIO *** Seguimiento de llamadas:  dump_stack_lvl+0x73/0xa0 mark_lock+0x102e/0x16b0 __lock_acquire+0x9ae/0x6170 lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 tpacket_rcv+0x863/0x3b30 dev_queue_xmit_nit+0x709/0xa40 vrf_finish_direct+0x26e/0x340 [vrf] vrf_l3_out+0x5f4/0xe80 [vrf] __ip_local_out+0x51e/0x7a0 [...]\"}]",
      "id": "CVE-2024-49980",
      "lastModified": "2024-10-31T14:58:27.613",
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    },
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      "cve": "CVE-2024-49980",
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      "initial_release_date": "2024-10-01T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "vrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-49980.json",
      "version": "1"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-49980\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T18:15:18.613\",\"lastModified\":\"2026-06-17T08:00:52.323\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvrf: revert \\\"vrf: Remove unnecessary RCU-bh critical section\\\"\\n\\nThis reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.\\n\\ndev_queue_xmit_nit is expected to be called with BH disabled.\\n__dev_queue_xmit has the following:\\n\\n        /* Disable soft irqs for various locks below. Also\\n         * stops preemption for RCU.\\n         */\\n        rcu_read_lock_bh();\\n\\nVRF must follow this invariant. The referenced commit removed this\\nprotection. Which triggered a lockdep warning:\\n\\n\\t================================\\n\\tWARNING: inconsistent lock state\\n\\t6.11.0 #1 Tainted: G        W\\n\\t--------------------------------\\n\\tinconsistent {IN-SOFTIRQ-W} -\u003e {SOFTIRQ-ON-W} usage.\\n\\tbtserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:\\n\\tffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30\\n\\t{IN-SOFTIRQ-W} state was registered at:\\n\\t  lock_acquire+0x19a/0x4f0\\n\\t  _raw_spin_lock+0x27/0x40\\n\\t  packet_rcv+0xa33/0x1320\\n\\t  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90\\n\\t  __netif_receive_skb_list_core+0x2c9/0x890\\n\\t  netif_receive_skb_list_internal+0x610/0xcc0\\n          [...]\\n\\n\\tother info that might help us debug this:\\n\\t Possible unsafe locking scenario:\\n\\n\\t       CPU0\\n\\t       ----\\n\\t  lock(rlock-AF_PACKET);\\n\\t  \u003cInterrupt\u003e\\n\\t    lock(rlock-AF_PACKET);\\n\\n\\t *** DEADLOCK ***\\n\\n\\tCall Trace:\\n\\t \u003cTASK\u003e\\n\\t dump_stack_lvl+0x73/0xa0\\n\\t mark_lock+0x102e/0x16b0\\n\\t __lock_acquire+0x9ae/0x6170\\n\\t lock_acquire+0x19a/0x4f0\\n\\t _raw_spin_lock+0x27/0x40\\n\\t tpacket_rcv+0x863/0x3b30\\n\\t dev_queue_xmit_nit+0x709/0xa40\\n\\t vrf_finish_direct+0x26e/0x340 [vrf]\\n\\t vrf_l3_out+0x5f4/0xe80 [vrf]\\n\\t __ip_local_out+0x51e/0x7a0\\n          [...]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vrf: revert \\\"vrf: Remove unexpected RCU-bh critical section\\\" Esto revierte el commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853. Se espera que dev_queue_xmit_nit se llame con BH deshabilitado. __dev_queue_xmit tiene lo siguiente: /* Deshabilitar irqs suaves para varios bloqueos a continuaci\u00f3n. Tambi\u00e9n * detiene la preempci\u00f3n para RCU. */ rcu_read_lock_bh(); VRF debe seguir esta invariante. el commit a la que se hace referencia elimin\u00f3 esta protecci\u00f3n. Lo que activ\u00f3 una advertencia de lockdep: ================================= ADVERTENCIA: estado de bloqueo inconsistente 6.11.0 #1 Tainted: GW -------------------------------- uso inconsistente de {IN-SOFTIRQ-W} -\u0026gt; {SOFTIRQ-ON-W}. btserver/134819 [HC0[0]:SC0[0]:HE1:SE1] toma: ffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, en: tpacket_rcv+0x863/0x3b30 {IN-SOFTIRQ-W} el estado se registr\u00f3 en: lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 packet_rcv+0xa33/0x1320 __netif_receive_skb_core.constprop.0+0xcb0/0x3a90 __netif_receive_skb_list_core+0x2c9/0x890 netif_receive_skb_list_internal+0x610/0xcc0 [...] otra informaci\u00f3n que podr\u00eda ayudar Depuremos esto: Posible escenario de bloqueo inseguro: CPU0 ---- lock(rlock-AF_PACKET);  lock(rlock-AF_PACKET); *** BLOQUEO INTERMEDIO *** Seguimiento de llamadas:  dump_stack_lvl+0x73/0xa0 mark_lock+0x102e/0x16b0 __lock_acquire+0x9ae/0x6170 lock_acquire+0x19a/0x4f0 _raw_spin_lock+0x27/0x40 tpacket_rcv+0x863/0x3b30 dev_queue_xmit_nit+0x709/0xa40 vrf_finish_direct+0x26e/0x340 [vrf] vrf_l3_out+0x5f4/0xe80 [vrf] __ip_local_out+0x51e/0x7a0 [...]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/vrf.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"504fc6f4f7f681d2a03aa5f68aad549d90eab853\",\"lessThan\":\"718a752bd746b3f4dd62516bb437baf73d548415\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"504fc6f4f7f681d2a03aa5f68aad549d90eab853\",\"lessThan\":\"8c9381b3138246d46536db93ed696832abd70204\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"504fc6f4f7f681d2a03aa5f68aad549d90eab853\",\"lessThan\":\"e61f8c4d179b2ffc0d3b7f821c3734be738643d0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"504fc6f4f7f681d2a03aa5f68aad549d90eab853\",\"lessThan\":\"b04c4d9eb4f25b950b33218e33b04c94e7445e51\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/vrf.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.55\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.14\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.3\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-10-22T13:32:37.764586Z\",\"id\":\"CVE-2024-49980\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.55\",\"matchCriteriaId\":\"5F23DA31-E148-44C0-BE2A-2BF42A564DC7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.14\",\"matchCriteriaId\":\"4C16BCE0-FFA0-4599-BE0A-1FD65101C021\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.3\",\"matchCriteriaId\":\"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/718a752bd746b3f4dd62516bb437baf73d548415\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8c9381b3138246d46536db93ed696832abd70204\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b04c4d9eb4f25b950b33218e33b04c94e7445e51\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e61f8c4d179b2ffc0d3b7f821c3734be738643d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:21:23+00:00",
      "cve": "CVE-2024-49980",
      "id": "CVE-2024-49980",
      "initial_release_date": "2024-10-21T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: vrf: revert \"vrf: Remove unnecessary RCU-bh critical section\"",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-49980.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:45:06Z",
      "cve": "CVE-2024-49980",
      "id": "CVE-2024-49980",
      "initial_release_date": "2024-10-23T13:22:40Z",
      "product_status:known_not_affected": "477",
      "product_status:recommended": "6",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-49980",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-49980.json",
      "version": "23"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49980\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:32:37.764586Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:32:40.965Z\"}}], \"cna\": {\"title\": \"vrf: revert \\\"vrf: Remove unnecessary RCU-bh critical section\\\"\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"504fc6f4f7f681d2a03aa5f68aad549d90eab853\", \"lessThan\": \"718a752bd746b3f4dd62516bb437baf73d548415\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"504fc6f4f7f681d2a03aa5f68aad549d90eab853\", \"lessThan\": \"8c9381b3138246d46536db93ed696832abd70204\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"504fc6f4f7f681d2a03aa5f68aad549d90eab853\", \"lessThan\": \"e61f8c4d179b2ffc0d3b7f821c3734be738643d0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"504fc6f4f7f681d2a03aa5f68aad549d90eab853\", \"lessThan\": \"b04c4d9eb4f25b950b33218e33b04c94e7445e51\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/vrf.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/vrf.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/718a752bd746b3f4dd62516bb437baf73d548415\"}, {\"url\": \"https://git.kernel.org/stable/c/8c9381b3138246d46536db93ed696832abd70204\"}, {\"url\": \"https://git.kernel.org/stable/c/e61f8c4d179b2ffc0d3b7f821c3734be738643d0\"}, {\"url\": \"https://git.kernel.org/stable/c/b04c4d9eb4f25b950b33218e33b04c94e7445e51\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvrf: revert \\\"vrf: Remove unnecessary RCU-bh critical section\\\"\\n\\nThis reverts commit 504fc6f4f7f681d2a03aa5f68aad549d90eab853.\\n\\ndev_queue_xmit_nit is expected to be called with BH disabled.\\n__dev_queue_xmit has the following:\\n\\n        /* Disable soft irqs for various locks below. Also\\n         * stops preemption for RCU.\\n         */\\n        rcu_read_lock_bh();\\n\\nVRF must follow this invariant. The referenced commit removed this\\nprotection. Which triggered a lockdep warning:\\n\\n\\t================================\\n\\tWARNING: inconsistent lock state\\n\\t6.11.0 #1 Tainted: G        W\\n\\t--------------------------------\\n\\tinconsistent {IN-SOFTIRQ-W} -\u003e {SOFTIRQ-ON-W} usage.\\n\\tbtserver/134819 [HC0[0]:SC0[0]:HE1:SE1] takes:\\n\\tffff8882da30c118 (rlock-AF_PACKET){+.?.}-{2:2}, at: tpacket_rcv+0x863/0x3b30\\n\\t{IN-SOFTIRQ-W} state was registered at:\\n\\t  lock_acquire+0x19a/0x4f0\\n\\t  _raw_spin_lock+0x27/0x40\\n\\t  packet_rcv+0xa33/0x1320\\n\\t  __netif_receive_skb_core.constprop.0+0xcb0/0x3a90\\n\\t  __netif_receive_skb_list_core+0x2c9/0x890\\n\\t  netif_receive_skb_list_internal+0x610/0xcc0\\n          [...]\\n\\n\\tother info that might help us debug this:\\n\\t Possible unsafe locking scenario:\\n\\n\\t       CPU0\\n\\t       ----\\n\\t  lock(rlock-AF_PACKET);\\n\\t  \u003cInterrupt\u003e\\n\\t    lock(rlock-AF_PACKET);\\n\\n\\t *** DEADLOCK ***\\n\\n\\tCall Trace:\\n\\t \u003cTASK\u003e\\n\\t dump_stack_lvl+0x73/0xa0\\n\\t mark_lock+0x102e/0x16b0\\n\\t __lock_acquire+0x9ae/0x6170\\n\\t lock_acquire+0x19a/0x4f0\\n\\t _raw_spin_lock+0x27/0x40\\n\\t tpacket_rcv+0x863/0x3b30\\n\\t dev_queue_xmit_nit+0x709/0xa40\\n\\t vrf_finish_direct+0x26e/0x340 [vrf]\\n\\t vrf_l3_out+0x5f4/0xe80 [vrf]\\n\\t __ip_local_out+0x51e/0x7a0\\n          [...]\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:30:36.882Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49980\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:30:36.882Z\", \"dateReserved\": \"2024-10-21T12:17:06.052Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:02:26.494Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.